2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_template.c
23 * @brief template for a new transport service
24 * @author Christian Grothoff
28 #include "gnunet_constants.h"
29 #include "gnunet_protocols.h"
30 #include "gnunet_connection_lib.h"
31 #include "gnunet_server_lib.h"
32 #include "gnunet_service_lib.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet_transport_service.h"
35 #include "gnunet_resolver_service.h"
36 #include "plugin_transport.h"
37 #include "gnunet_os_lib.h"
38 #include "microhttpd.h"
39 #include <curl/curl.h>
42 #define DEBUG_CURL GNUNET_NO
43 #define DEBUG_HTTP GNUNET_NO
46 * Text of the response sent back after the last bytes of a PUT
47 * request have been received (just to formally obey the HTTP
50 #define HTTP_PUT_RESPONSE "Thank you!"
53 * After how long do we expire an address that we
54 * learned from another peer if it is not reconfirmed
57 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
60 * Page returned if request invalid
62 #define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
65 * Timeout for a http connect
67 #define HTTP_CONNECT_TIMEOUT 30
70 * Timeout for a http connect
72 #define HTTP_MESSAGE_INITIAL_BUFFERSIZE GNUNET_SERVER_MAX_MESSAGE_SIZE
76 * Encapsulation of all of the state of the plugin.
81 * Network format for IPv4 addresses.
83 struct IPv4HttpAddress
86 * IPv4 address, in network byte order.
91 * Port number, in network byte order.
99 * Network format for IPv6 addresses.
101 struct IPv6HttpAddress
106 struct in6_addr ipv6_addr;
109 * Port number, in network byte order.
118 * Message to send using http
123 * Next field for linked list
125 struct HTTP_Message * next;
128 * buffer containing data to send
133 * amount of data already sent
138 * amount of data to sent
145 * Continuation function to call once the transmission buffer
146 * has again space available. NULL if there is no
147 * continuation to call.
149 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
152 * Closure for transmit_cont.
154 void *transmit_cont_cls;
159 * Session handle for connections.
165 * Stored in a linked list.
167 struct Session *next;
170 * Pointer to the global plugin struct.
172 struct Plugin *plugin;
175 * To whom are we talking to (set to our identity
176 * if we are still waiting for the welcome message)
178 struct GNUNET_PeerIdentity sender;
181 * Sender's ip address to distinguish between incoming connections
183 struct sockaddr_in * addr_inbound;
186 * Sender's ip address recieved by transport
188 struct sockaddr_in * addr_outbound;
191 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
193 unsigned int is_client;
196 * Is the connection active (GNUNET_YES) or terminated (GNUNET_NO)?
198 unsigned int is_active;
201 * At what time did we reset last_received last?
203 struct GNUNET_TIME_Absolute last_quota_update;
206 * How many bytes have we received since the "last_quota_update"
209 uint64_t last_received;
212 * Number of bytes per ms that this peer is allowed
218 * Is there a HTTP/PUT in progress?
220 unsigned int is_put_in_progress;
223 * Is there a HTTP/PUT in progress?
225 unsigned int is_bad_request;
230 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
232 struct HTTP_Message * pending_outbound_msg;;
234 struct HTTP_Message * pending_inbound_msg;
240 * Encapsulation of all of the state of the plugin.
247 struct GNUNET_TRANSPORT_PluginEnvironment *env;
249 unsigned int port_inbound;
252 * List of open sessions.
254 struct Session *sessions;
257 * Number of active sessions
260 unsigned int session_count;
264 * Daemon for listening for new IPv4 connections.
266 static struct MHD_Daemon *http_daemon_v4;
269 * Daemon for listening for new IPv6connections.
271 static struct MHD_Daemon *http_daemon_v6;
274 * Our primary task for http daemon handling IPv4 connections
276 static GNUNET_SCHEDULER_TaskIdentifier http_task_v4;
279 * Our primary task for http daemon handling IPv6 connections
281 static GNUNET_SCHEDULER_TaskIdentifier http_task_v6;
285 * The task sending data
287 static GNUNET_SCHEDULER_TaskIdentifier http_task_send;
291 * Information about this plugin
293 static struct Plugin *plugin;
298 static CURLM *multi_handle;
301 * Our ASCII encoded, hashed peer identity
302 * This string is used to distinguish between connections and is added to the urls
304 static struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
306 struct GNUNET_TIME_Relative timeout;
309 * Finds a http session in our linked list using peer identity as a key
310 * @param peer peeridentity
311 * @return http session corresponding to peer identity
313 static struct Session * find_session_by_pi( const struct GNUNET_PeerIdentity *peer )
315 struct Session * cur;
316 GNUNET_HashCode hc_peer;
317 GNUNET_HashCode hc_current;
319 cur = plugin->sessions;
320 hc_peer = peer->hashPubKey;
323 hc_current = cur->sender.hashPubKey;
324 if ( 0 == GNUNET_CRYPTO_hash_cmp( &hc_peer, &hc_current))
326 cur = plugin->sessions->next;
332 * Finds a http session in our linked list using libcurl handle as a key
333 * Needed when sending data with libcurl to differentiate between sessions
334 * @param handle peeridentity
335 * @return http session corresponding to peer identity
337 static struct Session * find_session_by_curlhandle( CURL* handle )
339 struct Session * cur;
341 cur = plugin->sessions;
344 if ( handle == cur->curl_handle )
346 cur = plugin->sessions->next;
352 * Create a new session
354 * @param address address the peer is using inbound
355 * @param address address the peer is using outbound
356 * @param peer identity
357 * @return created session object
359 static struct Session * create_session (struct sockaddr_in *addr_in, struct sockaddr_in *addr_out, const struct GNUNET_PeerIdentity *peer)
361 struct Session * ses = GNUNET_malloc ( sizeof( struct Session) );
363 ses->addr_inbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
364 ses->addr_outbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
366 ses->plugin = plugin;
367 if ((NULL != addr_in) && (( AF_INET == addr_in->sin_family) || ( AF_INET6 == addr_in->sin_family)))
369 memcpy(ses->addr_inbound, addr_in, sizeof (struct sockaddr_in));
371 if ((NULL != addr_out) && (( AF_INET == addr_out->sin_family) || ( AF_INET6 == addr_out->sin_family)))
373 memcpy(ses->addr_outbound, addr_out, sizeof (struct sockaddr_in));
375 memcpy(&ses->sender, peer, sizeof (struct GNUNET_PeerIdentity));
376 GNUNET_CRYPTO_hash_to_enc(&ses->sender.hashPubKey,&(ses->hash));
377 ses->is_active = GNUNET_NO;
378 ses->pending_inbound_msg = GNUNET_malloc( sizeof (struct HTTP_Message));
379 ses->pending_inbound_msg->buf = GNUNET_malloc(GNUNET_SERVER_MAX_MESSAGE_SIZE);
380 ses->pending_inbound_msg->len = GNUNET_SERVER_MAX_MESSAGE_SIZE;
381 ses->pending_inbound_msg->pos = 0;
388 * Callback called by MHD when a connection is terminated
390 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
394 cs = *httpSessionCache;
397 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->sender));
398 /* session set to inactive */
399 cs->is_active = GNUNET_NO;
400 cs->is_put_in_progress = GNUNET_NO;
406 * Check if we are allowed to connect to the given IP.
409 acceptPolicyCallback (void *cls,
410 const struct sockaddr *addr, socklen_t addr_len)
412 /* Every connection is accepted, nothing more to do here */
420 * Process GET or PUT request received via MHD. For
421 * GET, queue response that will send back our pending
422 * messages. For PUT, process incoming data and send
423 * to GNUnet core. In either case, check if a session
424 * already exists and create a new one if not.
427 accessHandlerCallback (void *cls,
428 struct MHD_Connection *session,
432 const char *upload_data,
433 size_t * upload_data_size, void **httpSessionCache)
435 struct MHD_Response *response;
437 struct Session * cs_temp;
438 const union MHD_ConnectionInfo * conn_info;
439 struct sockaddr_in *addrin;
440 struct sockaddr_in6 *addrin6;
441 char address[INET6_ADDRSTRLEN+14];
442 struct GNUNET_PeerIdentity pi_in;
444 struct GNUNET_MessageHeader *gn_msg;
445 int send_error_to_client;
448 send_error_to_client = GNUNET_NO;
450 if ( NULL == *httpSessionCache)
452 /* check url for peer identity */
453 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
454 if ( GNUNET_SYSERR == res )
456 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
457 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
458 MHD_destroy_response (response);
460 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
462 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
466 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
467 /* Incoming IPv4 connection */
468 if ( AF_INET == conn_info->client_addr->sin_family)
470 addrin = conn_info->client_addr;
471 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
473 /* Incoming IPv6 connection */
474 if ( AF_INET6 == conn_info->client_addr->sin_family)
476 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
477 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
479 /* find existing session for address */
481 if (plugin->session_count > 0)
483 cs = plugin->sessions;
487 /* Comparison based on ip address */
488 // res = (0 == memcmp(&(conn_info->client_addr->sin_addr),&(cs->addr->sin_addr), sizeof (struct in_addr))) ? GNUNET_YES : GNUNET_NO;
490 /* Comparison based on ip address, port number and address family */
491 // res = (0 == memcmp((conn_info->client_addr),(cs->addr), sizeof (struct sockaddr_in))) ? GNUNET_YES : GNUNET_NO;
493 /* Comparison based on PeerIdentity */
494 res = (0 == memcmp(&pi_in,&(cs->sender), sizeof (struct GNUNET_PeerIdentity))) ? GNUNET_YES : GNUNET_NO;
496 if ( GNUNET_YES == res)
498 /* existing session for this address found */
499 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session for peer `%s' found\n",GNUNET_i2s(&cs->sender));
505 /* no existing session, create a new one*/
508 /* create new session object */
509 cs = create_session(conn_info->client_addr, NULL, &pi_in);
511 /* Insert session into linked list */
512 if ( plugin->sessions == NULL)
514 plugin->sessions = cs;
515 plugin->session_count = 1;
517 cs_temp = plugin->sessions;
518 while ( cs_temp->next != NULL )
520 cs_temp = cs_temp->next;
525 plugin->session_count++;
527 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", GNUNET_i2s(&cs->sender), plugin->session_count);
531 if (*httpSessionCache == NULL)
533 *httpSessionCache = cs;
534 /* Updating session */
535 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
537 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`[%s]:%u')\n",method, GNUNET_i2s(&cs->sender),address,ntohs(cs->addr_inbound->sin_port));
541 cs = *httpSessionCache;
543 /* Is it a PUT or a GET request */
544 if ( 0 == strcmp (MHD_HTTP_METHOD_PUT, method) )
547 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
549 if (cs->pending_inbound_msg->pos !=0 )
551 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
552 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
553 GNUNET_i2s(&cs->sender), cs->pending_inbound_msg->pos);
554 cs->pending_inbound_msg->pos = 0;
557 cs->is_put_in_progress = GNUNET_YES;
558 cs->is_bad_request = GNUNET_NO;
559 cs->is_active = GNUNET_YES;
563 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
565 if ((*upload_data_size + cs->pending_inbound_msg->pos < cs->pending_inbound_msg->len) && (*upload_data_size + cs->pending_inbound_msg->pos <= GNUNET_SERVER_MAX_MESSAGE_SIZE))
567 /* copy uploaded data to buffer */
568 memcpy(&cs->pending_inbound_msg->buf[cs->pending_inbound_msg->pos],upload_data,*upload_data_size);
569 cs->pending_inbound_msg->pos += *upload_data_size;
570 *upload_data_size = 0;
575 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes not added to message of %u bytes, message to big\n",*upload_data_size, cs->pending_inbound_msg->pos);
576 cs->is_bad_request = GNUNET_YES;
577 /* (*upload_data_size) bytes not processed */
582 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
584 *upload_data_size = 0;
585 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
586 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
589 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 ENTITY TOO LARGE as PUT Response\n");
590 cs->is_bad_request = GNUNET_NO;
591 cs->is_put_in_progress =GNUNET_NO;
593 MHD_destroy_response (response);
597 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
599 send_error_to_client = GNUNET_YES;
600 struct GNUNET_MessageHeader * gn_msg = NULL;
601 /*check message and forward here */
603 if (cs->pending_inbound_msg->pos >= sizeof (struct GNUNET_MessageHeader))
605 gn_msg = GNUNET_malloc (cs->pending_inbound_msg->pos);
606 memcpy (gn_msg,cs->pending_inbound_msg->buf,cs->pending_inbound_msg->pos);
608 if ((ntohs(gn_msg->size) == cs->pending_inbound_msg->pos))
610 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved GNUnet message type %u size %u and payload %u \n",ntohs (gn_msg->type), ntohs (gn_msg->size), ntohs (gn_msg->size)-sizeof(struct GNUNET_MessageHeader));
611 /* forwarding message to transport */
614 if ( AF_INET == cs->addr_inbound->sin_family)
616 tmp = GNUNET_malloc (INET_ADDRSTRLEN + 14);
617 inet_ntop(AF_INET, &(cs->addr_inbound)->sin_addr,address,INET_ADDRSTRLEN);
618 GNUNET_asprintf(&tmp,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
620 /* Incoming IPv6 connection */
621 if ( AF_INET6 == cs->addr_inbound->sin_family)
623 tmp = GNUNET_malloc (INET6_ADDRSTRLEN + 14);
624 inet_ntop(AF_INET6, &((struct sockaddr_in6 *) cs->addr_inbound)->sin6_addr,address,INET6_ADDRSTRLEN);
625 GNUNET_asprintf(&tmp,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
627 plugin->env->receive(plugin->env, &(cs->sender), gn_msg, 1, cs , tmp, strlen(tmp));
629 send_error_to_client = GNUNET_NO;
633 if (send_error_to_client == GNUNET_NO)
635 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
636 res = MHD_queue_response (session, MHD_HTTP_OK, response);
637 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
638 MHD_destroy_response (response);
642 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved malformed message with %u bytes\n", cs->pending_inbound_msg->pos);
643 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
644 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
645 MHD_destroy_response (response);
646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
649 GNUNET_free_non_null (gn_msg);
650 cs->is_put_in_progress = GNUNET_NO;
651 cs->is_bad_request = GNUNET_NO;
652 cs->pending_inbound_msg->pos = 0;
656 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
658 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
659 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
660 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
661 res = MHD_queue_response (session, MHD_HTTP_OK, response);
662 MHD_destroy_response (response);
670 * Call MHD to process pending requests and then go back
671 * and schedule the next run.
673 static void http_daemon_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
676 * Function that queries MHD's select sets and
677 * starts the task waiting for them.
679 static GNUNET_SCHEDULER_TaskIdentifier
680 http_daemon_prepare (struct MHD_Daemon *daemon_handle)
682 GNUNET_SCHEDULER_TaskIdentifier ret;
686 struct GNUNET_NETWORK_FDSet *wrs;
687 struct GNUNET_NETWORK_FDSet *wws;
688 struct GNUNET_NETWORK_FDSet *wes;
690 unsigned long long timeout;
692 struct GNUNET_TIME_Relative tv;
697 wrs = GNUNET_NETWORK_fdset_create ();
698 wes = GNUNET_NETWORK_fdset_create ();
699 wws = GNUNET_NETWORK_fdset_create ();
701 GNUNET_assert (MHD_YES ==
702 MHD_get_fdset (daemon_handle,
707 haveto = MHD_get_timeout (daemon_handle, &timeout);
708 if (haveto == MHD_YES)
709 tv.value = (uint64_t) timeout;
711 tv = GNUNET_TIME_UNIT_FOREVER_REL;
712 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
713 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
714 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
715 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
716 GNUNET_SCHEDULER_PRIORITY_HIGH,
717 GNUNET_SCHEDULER_NO_TASK,
723 GNUNET_NETWORK_fdset_destroy (wrs);
724 GNUNET_NETWORK_fdset_destroy (wws);
725 GNUNET_NETWORK_fdset_destroy (wes);
730 * Call MHD to process pending requests and then go back
731 * and schedule the next run.
733 static void http_daemon_run (void *cls,
734 const struct GNUNET_SCHEDULER_TaskContext *tc)
736 struct MHD_Daemon *daemon_handle = cls;
738 if (daemon_handle == http_daemon_v4)
739 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
741 if (daemon_handle == http_daemon_v6)
742 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
744 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
747 GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
748 if (daemon_handle == http_daemon_v4)
749 http_task_v4 = http_daemon_prepare (daemon_handle);
750 if (daemon_handle == http_daemon_v6)
751 http_task_v6 = http_daemon_prepare (daemon_handle);
756 * Removes a message from the linked list of messages
757 * @param ses session to remove message from
758 * @param msg message to remove
759 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
762 static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
764 struct HTTP_Message * cur;
765 struct HTTP_Message * next;
767 cur = ses->pending_outbound_msg;
771 return GNUNET_SYSERR;
775 ses->pending_outbound_msg = cur->next;
776 GNUNET_free (cur->buf);
777 GNUNET_free (cur->dest_url);
783 while (cur->next!=msg)
785 if (cur->next != NULL)
788 return GNUNET_SYSERR;
791 cur->next = cur->next->next;
792 GNUNET_free (cur->next->buf);
793 GNUNET_free (cur->next->dest_url);
794 GNUNET_free (cur->next);
800 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
803 unsigned int len = size * nmemb;
805 tmp = GNUNET_malloc ( len+1 );
807 if (tmp[len-2] == 13)
810 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
813 if (0==strcmp (tmp,"HTTP/1.1 100 Continue"))
815 res->http_result_code=100;
817 if (0==strcmp (tmp,"HTTP/1.1 200 OK"))
819 res->http_result_code=200;
821 if (0==strcmp (tmp,"HTTP/1.1 400 Bad Request"))
823 res->http_result_code=400;
825 if (0==strcmp (tmp,"HTTP/1.1 404 Not Found"))
827 res->http_result_code=404;
829 if (0==strcmp (tmp,"HTTP/1.1 413 Request entity too large"))
831 res->http_result_code=413;
839 * Callback method used with libcurl
840 * Method is called when libcurl needs to read data during sending
841 * @param stream pointer where to write data
842 * @param size size of an individual element
843 * @param nmemb count of elements that can be written to the buffer
844 * @param ptr source pointer, passed to the libcurl handle
845 * @return bytes written to stream
847 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
849 struct Session * ses = ptr;
850 struct HTTP_Message * msg = ses->pending_outbound_msg;
851 unsigned int bytes_sent;
854 if (msg->len > (size * nmemb))
855 return CURL_READFUNC_ABORT;
857 if (( msg->pos < msg->len) && (msg->len < (size * nmemb)))
859 memcpy(stream, msg->buf, msg->len);
861 bytes_sent = msg->len;
868 * Callback method used with libcurl
869 * Method is called when libcurl needs to write data during sending
870 * @param stream pointer where to write data
871 * @param size size of an individual element
872 * @param nmemb count of elements that can be written to the buffer
873 * @param ptr destination pointer, passed to the libcurl handle
874 * @return bytes read from stream
876 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
878 char * data = malloc(size*nmemb +1);
880 memcpy( data, stream, size*nmemb);
881 data[size*nmemb] = '\0';
882 /* Just a dummy print for the response recieved for the PUT message */
883 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Recieved %u bytes: `%s' \n", size * nmemb, data);
885 return (size * nmemb);
890 * Function setting up file descriptors and scheduling task to run
891 * @param session session to send data to
892 * @return bytes sent to peer
894 static size_t send_prepare(struct Session* session );
897 * Function setting up curl handle and selecting message to send
898 * @param ses session to send data to
899 * @return bytes sent to peer
901 static ssize_t send_select_init (struct Session* ses )
905 struct HTTP_Message * msg;
907 if ( NULL == ses->curl_handle)
908 ses->curl_handle = curl_easy_init();
909 if( NULL == ses->curl_handle)
911 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Getting cURL handle failed\n");
914 msg = ses->pending_outbound_msg;
919 curl_easy_setopt(ses->curl_handle, CURLOPT_VERBOSE, 1L);
921 curl_easy_setopt(ses->curl_handle, CURLOPT_URL, msg->dest_url);
922 curl_easy_setopt(ses->curl_handle, CURLOPT_PUT, 1L);
923 curl_easy_setopt(ses->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
924 curl_easy_setopt(ses->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
925 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
926 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
927 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
928 curl_easy_setopt(ses->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->len);
929 curl_easy_setopt(ses->curl_handle, CURLOPT_TIMEOUT, (long) (timeout.value / 1000 ));
930 curl_easy_setopt(ses->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
932 mret = curl_multi_add_handle(multi_handle, ses->curl_handle);
933 if (mret != CURLM_OK)
935 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
936 _("%s failed at %s:%d: `%s'\n"),
937 "curl_multi_add_handle", __FILE__, __LINE__,
938 curl_multi_strerror (mret));
941 bytes_sent = send_prepare (ses );
945 static void send_execute (void *cls,
946 const struct GNUNET_SCHEDULER_TaskContext *tc)
952 struct Session * cs = NULL;
954 http_task_send = GNUNET_SCHEDULER_NO_TASK;
955 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
961 mret = curl_multi_perform (multi_handle, &running);
967 msg = curl_multi_info_read (multi_handle, &running);
968 GNUNET_break (msg != NULL);
971 /* get session for affected curl handle */
972 GNUNET_assert ( msg->easy_handle != NULL );
973 cs = find_session_by_curlhandle (msg->easy_handle);
974 GNUNET_assert ( cs != NULL );
975 GNUNET_assert ( cs->pending_outbound_msg != NULL );
980 if ( (msg->data.result != CURLE_OK) &&
981 (msg->data.result != CURLE_GOT_NOTHING) )
984 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
985 _("%s failed for `%s' at %s:%d: `%s'\n"),
986 "curl_multi_perform",
987 GNUNET_i2s(&cs->sender),
990 curl_easy_strerror (msg->data.result));
991 /* sending msg failed*/
992 if (( NULL != cs->pending_outbound_msg) && ( NULL != cs->pending_outbound_msg->transmit_cont))
993 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_SYSERR);
997 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
998 "Send to peer `%s' completed.\n", GNUNET_i2s(&cs->sender));
1000 curl_easy_cleanup(cs->curl_handle);
1001 cs->curl_handle=NULL;
1003 /* Calling transmit continuation */
1004 if (( NULL != cs->pending_outbound_msg) && (NULL != cs->pending_outbound_msg->transmit_cont))
1005 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_OK);
1007 if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg))
1008 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->sender));
1010 /* send pending messages */
1011 if (cs->pending_outbound_msg != NULL)
1013 send_select_init (cs);
1022 while ( (running > 0) );
1025 while (mret == CURLM_CALL_MULTI_PERFORM);
1031 * Function setting up file descriptors and scheduling task to run
1032 * @param ses session to send data to
1033 * @return bytes sent to peer
1035 static size_t send_prepare(struct Session* session )
1041 struct GNUNET_NETWORK_FDSet *grs;
1042 struct GNUNET_NETWORK_FDSet *gws;
1050 mret = curl_multi_fdset (multi_handle, &rs, &ws, &es, &max);
1051 if (mret != CURLM_OK)
1053 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1054 _("%s failed at %s:%d: `%s'\n"),
1055 "curl_multi_fdset", __FILE__, __LINE__,
1056 curl_multi_strerror (mret));
1059 mret = curl_multi_timeout (multi_handle, &to);
1060 if (mret != CURLM_OK)
1062 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1063 _("%s failed at %s:%d: `%s'\n"),
1064 "curl_multi_timeout", __FILE__, __LINE__,
1065 curl_multi_strerror (mret));
1069 grs = GNUNET_NETWORK_fdset_create ();
1070 gws = GNUNET_NETWORK_fdset_create ();
1071 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1072 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1073 http_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1074 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1075 GNUNET_SCHEDULER_NO_TASK,
1076 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1081 GNUNET_NETWORK_fdset_destroy (gws);
1082 GNUNET_NETWORK_fdset_destroy (grs);
1084 /* FIXME: return bytes REALLY sent */
1089 * Function that can be used by the transport service to transmit
1090 * a message using the plugin.
1092 * @param cls closure
1093 * @param target who should receive this message
1094 * @param priority how important is the message
1095 * @param msgbuf the message to transmit
1096 * @param msgbuf_size number of bytes in 'msgbuf'
1097 * @param to when should we time out
1098 * @param session which session must be used (or NULL for "any")
1099 * @param addr the address to use (can be NULL if the plugin
1100 * is "on its own" (i.e. re-use existing TCP connection))
1101 * @param addrlen length of the address in bytes
1102 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1103 * otherwise the plugin may use other addresses or
1104 * existing connections (if available)
1105 * @param cont continuation to call once the message has
1106 * been transmitted (or if the transport is ready
1107 * for the next transmission call; or if the
1108 * peer disconnected...)
1109 * @param cont_cls closure for cont
1110 * @return number of bytes used (on the physical network, with overheads);
1111 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1112 * and does NOT mean that the message was not transmitted (DV)
1115 http_plugin_send (void *cls,
1116 const struct GNUNET_PeerIdentity *target,
1119 unsigned int priority,
1120 struct GNUNET_TIME_Relative to,
1121 struct Session *session,
1125 GNUNET_TRANSPORT_TransmitContinuation cont,
1129 struct Session* ses;
1130 struct Session* ses_temp;
1131 struct HTTP_Message * msg;
1132 struct HTTP_Message * tmp;
1137 /* find session for peer */
1138 ses = find_session_by_pi (target);
1140 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Existing session for peer `%s' found\n", GNUNET_i2s(target));
1143 /* create new session object */
1145 ses = create_session(NULL, (struct sockaddr_in *) addr, target);
1146 ses->is_active = GNUNET_YES;
1148 /* Insert session into linked list */
1149 if ( plugin->sessions == NULL)
1151 plugin->sessions = ses;
1152 plugin->session_count = 1;
1154 ses_temp = plugin->sessions;
1155 while ( ses_temp->next != NULL )
1157 ses_temp = ses_temp->next;
1159 if (ses_temp != ses )
1161 ses_temp->next = ses;
1162 plugin->session_count++;
1164 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", GNUNET_i2s(target), plugin->session_count);
1167 GNUNET_assert (addr!=NULL);
1170 /* setting url to send to */
1171 if (force_address == GNUNET_YES)
1173 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1175 address = GNUNET_malloc(INET_ADDRSTRLEN + 14 + strlen ((const char *) (&ses->hash)));
1176 inet_ntop(AF_INET,&((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1177 port = ntohs(((struct IPv4HttpAddress *) addr)->u_port);
1178 GNUNET_asprintf(&address,"http://%s:%u/%s",address,port, (char *) (&ses->hash));
1180 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1182 address = GNUNET_malloc(INET6_ADDRSTRLEN + 14 + strlen ((const char *) (&ses->hash)));
1183 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1184 port = ntohs(((struct IPv6HttpAddress *) addr)->u6_port);
1185 GNUNET_asprintf(&address,"http://%s:%u/%s",address,port,(char *) (&ses->hash));
1194 GNUNET_assert (address != NULL);
1197 /* setting up message */
1198 msg = GNUNET_malloc (sizeof (struct HTTP_Message));
1200 msg->len = msgbuf_size;
1202 msg->buf = GNUNET_malloc (msgbuf_size);
1203 msg->dest_url = address;
1204 msg->transmit_cont = cont;
1205 msg->transmit_cont_cls = cont_cls;
1206 memcpy (msg->buf,msgbuf, msgbuf_size);
1208 /* insert created message in list of pending messages */
1209 if (ses->pending_outbound_msg == NULL)
1211 ses->pending_outbound_msg = msg;
1213 tmp = ses->pending_outbound_msg;
1214 while ( NULL != tmp->next)
1223 if (msg == ses->pending_outbound_msg)
1225 bytes_sent = send_select_init (ses);
1234 * Function that can be used to force the plugin to disconnect
1235 * from the given peer and cancel all previous transmissions
1236 * (and their continuationc).
1238 * @param cls closure
1239 * @param target peer from which to disconnect
1242 http_plugin_disconnect (void *cls,
1243 const struct GNUNET_PeerIdentity *target)
1245 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1246 // struct Plugin *plugin = cls;
1252 * Convert the transports address to a nice, human-readable
1255 * @param cls closure
1256 * @param type name of the transport that generated the address
1257 * @param addr one of the addresses of the host, NULL for the last address
1258 * the specific address format depends on the transport
1259 * @param addrlen length of the address
1260 * @param numeric should (IP) addresses be displayed in numeric form?
1261 * @param timeout after how long should we give up?
1262 * @param asc function to call on each string
1263 * @param asc_cls closure for asc
1266 http_plugin_address_pretty_printer (void *cls,
1271 struct GNUNET_TIME_Relative timeout,
1272 GNUNET_TRANSPORT_AddressStringCallback
1275 const struct IPv4HttpAddress *t4;
1276 const struct IPv6HttpAddress *t6;
1277 struct sockaddr_in a4;
1278 struct sockaddr_in6 a6;
1283 if (addrlen == sizeof (struct IPv6HttpAddress))
1285 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1287 a6.sin6_addr = t6->ipv6_addr;
1288 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1289 port = ntohs(t6->u6_port);
1291 else if (addrlen == sizeof (struct IPv4HttpAddress))
1293 address = GNUNET_malloc (INET_ADDRSTRLEN);
1295 a4.sin_addr.s_addr = t4->ipv4_addr;
1296 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1297 port = ntohs(t4->u_port);
1301 /* invalid address */
1302 GNUNET_break_op (0);
1303 asc (asc_cls, NULL);
1307 ret = GNUNET_malloc(strlen(address) +14);
1308 GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1309 GNUNET_free (address);
1316 * Another peer has suggested an address for this
1317 * peer and transport plugin. Check that this could be a valid
1318 * address. If so, consider adding it to the list
1321 * @param cls closure
1322 * @param addr pointer to the address
1323 * @param addrlen length of addr
1324 * @return GNUNET_OK if this is a plausible address for this peer
1328 http_plugin_address_suggested (void *cls,
1329 void *addr, size_t addrlen)
1331 struct IPv4HttpAddress *v4;
1332 struct IPv6HttpAddress *v6;
1335 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1336 (addrlen != sizeof (struct IPv6HttpAddress)))
1338 return GNUNET_SYSERR;
1340 if (addrlen == sizeof (struct IPv4HttpAddress))
1342 v4 = (struct IPv4HttpAddress *) addr;
1343 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1345 return GNUNET_SYSERR;
1347 port = ntohs (v4->u_port);
1348 if (port != plugin->port_inbound)
1350 return GNUNET_SYSERR;
1355 v6 = (struct IPv6HttpAddress *) addr;
1356 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1358 return GNUNET_SYSERR;
1360 port = ntohs (v6->u6_port);
1361 if (port != plugin->port_inbound)
1363 return GNUNET_SYSERR;
1373 * Function called for a quick conversion of the binary address to
1374 * a numeric address. Note that the caller must not free the
1375 * address and that the next call to this function is allowed
1376 * to override the address again.
1378 * @param cls closure
1379 * @param addr binary address
1380 * @param addrlen length of the address
1381 * @return string representing the same address
1384 http_plugin_address_to_string (void *cls,
1388 const struct IPv4HttpAddress *t4;
1389 const struct IPv6HttpAddress *t6;
1390 struct sockaddr_in a4;
1391 struct sockaddr_in6 a6;
1396 if (addrlen == sizeof (struct IPv6HttpAddress))
1398 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1400 a6.sin6_addr = t6->ipv6_addr;
1401 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1402 port = ntohs(t6->u6_port);
1404 else if (addrlen == sizeof (struct IPv4HttpAddress))
1406 address = GNUNET_malloc (INET_ADDRSTRLEN);
1408 a4.sin_addr.s_addr = t4->ipv4_addr;
1409 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1410 port = ntohs(t4->u_port);
1414 /* invalid address */
1418 ret = GNUNET_malloc(strlen(address) +6);
1419 GNUNET_asprintf(&ret,"%s:%u",address,port);
1420 GNUNET_free (address);
1425 * Add the IP of our network interface to the list of
1426 * our external IP addresses.
1428 * @param cls the 'struct Plugin*'
1429 * @param name name of the interface
1430 * @param isDefault do we think this may be our default interface
1431 * @param addr address of the interface
1432 * @param addrlen number of bytes in addr
1433 * @return GNUNET_OK to continue iterating
1436 process_interfaces (void *cls,
1439 const struct sockaddr *addr, socklen_t addrlen)
1441 struct IPv4HttpAddress t4;
1442 struct IPv6HttpAddress t6;
1447 af = addr->sa_family;
1450 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1452 /* skip loopback addresses */
1455 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1456 t4.u_port = htons (plugin->port_inbound);
1460 else if (af == AF_INET6)
1462 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1464 /* skip link local addresses */
1467 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1469 /* skip loopback addresses */
1472 memcpy (&t6.ipv6_addr,
1473 &((struct sockaddr_in6 *) addr)->sin6_addr,
1474 sizeof (struct in6_addr));
1475 t6.u6_port = htons (plugin->port_inbound);
1484 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1489 * Exit point from the plugin.
1492 libgnunet_plugin_transport_http_done (void *cls)
1494 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1495 struct Plugin *plugin = api->cls;
1496 struct Session * cs;
1497 struct Session * cs_next;
1500 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
1502 if ( http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1504 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v4);
1505 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1508 if ( http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1510 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v6);
1511 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1514 if ( http_task_send != GNUNET_SCHEDULER_NO_TASK)
1516 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_send);
1517 http_task_send = GNUNET_SCHEDULER_NO_TASK;
1520 if (http_daemon_v4 != NULL)
1522 MHD_stop_daemon (http_daemon_v4);
1523 http_daemon_v4 = NULL;
1525 if (http_daemon_v6 != NULL)
1527 MHD_stop_daemon (http_daemon_v6);
1528 http_daemon_v6 = NULL;
1531 mret = curl_multi_cleanup(multi_handle);
1532 if ( CURLM_OK != mret)
1533 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1535 /* free all sessions */
1536 cs = plugin->sessions;
1540 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->sender));
1544 /* freeing messages */
1545 struct HTTP_Message *cur;
1546 struct HTTP_Message *tmp;
1547 cur = cs->pending_outbound_msg;
1552 if (NULL != cur->buf)
1553 GNUNET_free (cur->buf);
1557 GNUNET_free (cs->pending_inbound_msg->buf);
1558 GNUNET_free (cs->pending_inbound_msg);
1559 GNUNET_free_non_null (cs->addr_inbound);
1560 GNUNET_free_non_null (cs->addr_outbound);
1563 plugin->session_count--;
1567 GNUNET_free (plugin);
1574 * Entry point for the plugin.
1577 libgnunet_plugin_transport_http_init (void *cls)
1579 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1580 struct GNUNET_TRANSPORT_PluginFunctions *api;
1581 unsigned int timeout;
1582 struct GNUNET_TIME_Relative gn_timeout;
1583 long long unsigned int port;
1585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1587 plugin = GNUNET_malloc (sizeof (struct Plugin));
1589 plugin->sessions = NULL;
1590 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1592 api->send = &http_plugin_send;
1593 api->disconnect = &http_plugin_disconnect;
1594 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1595 api->check_address = &http_plugin_address_suggested;
1596 api->address_to_string = &http_plugin_address_to_string;
1598 /* Hashing our identity to use it in URLs */
1599 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &my_ascii_hash_ident);
1601 /* Reading port number from config file */
1603 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1609 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1612 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1614 libgnunet_plugin_transport_http_done (api);
1618 GNUNET_assert ((port > 0) && (port <= 65535));
1619 GNUNET_assert (&my_ascii_hash_ident != NULL);
1621 plugin->port_inbound = port;
1622 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1623 timeout = ( gn_timeout.value / 1000);
1624 if ((http_daemon_v4 == NULL) && (http_daemon_v6 == NULL) && (port != 0))
1626 http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1628 &acceptPolicyCallback,
1629 NULL , &accessHandlerCallback, NULL,
1630 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1631 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1632 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1633 /* FIXME: set correct limit */
1634 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1635 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1637 http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1639 &acceptPolicyCallback,
1640 NULL , &accessHandlerCallback, NULL,
1641 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1642 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1643 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1644 /* FIXME: set correct limit */
1645 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1646 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1649 if (http_daemon_v4 != NULL)
1650 http_task_v4 = http_daemon_prepare (http_daemon_v4);
1651 if (http_daemon_v6 != NULL)
1652 http_task_v6 = http_daemon_prepare (http_daemon_v6);
1654 if (http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1655 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1656 else if (http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1660 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1661 libgnunet_plugin_transport_http_done (api);
1665 /* Initializing cURL */
1666 multi_handle = curl_multi_init();
1667 if ( NULL == multi_handle )
1669 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1671 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1673 libgnunet_plugin_transport_http_done (api);
1677 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1682 /* end of plugin_transport_template.c */